1274904-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1274904-20-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,4,9,0 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1274904-20:
(9*1)+(8*2)+(7*7)+(6*4)+(5*9)+(4*0)+(3*4)+(2*2)+(1*0)=159
159 % 10 = 9
So 1274904-20-9 is a valid CAS Registry Number.